Triumph 750 Cam Question

I guess I should have been WAAAAAAAY more specific so I could not be called on the carpet by the ghost of Danny Macia, (properly channeled by Tony Dunn of course). Danny was the creater and maker of all sorts of ONE OFF parts that are unavaiable to most mortals here in jockey journal land. Danny probably forgot more about the Triumph motorcycle than this board and all of its members collectively will ever know.

Let me be less brief and more specific for all who give a shit. A STOCK unit exhaust camshaft is incompatible with a STOCK pre-unit tach drive timing cover without some sort of specialized work on the end of the camshaft or the drive of the tach cover or the addition of some widget that mates them up. In my estimation, combined with my clearly WAAAAAAY more limited knowledge than the experts on here, it seems to me that the stock pre-unit tach drive will not bolt directly to a lower end equipped with a stock unit camshaft and make the tach go roundy round.

However, since I began racing at the Bonneville Salt Flats 8 years ago I have run a stock unit construction exhaust camshaft in my 500cc pre-unit lower end with a "normal" non-tach drive cover with many many successful runs. I should add a disclaimer here that I have not run every timing cover ever made with every unit camshaft ever made in a pre-unit lower end so I cannot be 100% sure of what I am saying here. I am 99% sure however that I am not at least 50% full of shit.

For those of you who might be wondering about this "controversial" part . . .

It's just an adapter to allow you to drive a mechanical tach (like a Smith's) comparable to what was used on the pre-units. They are, as far as I know, one off fabrications. When Tyler was getting his pre-unit salt flat Triumph together (I'm sure Wes recalls this very well ), he wanted to run a nice old mechanical tach. Only one problem - the later unit cam wouldn't accept the tach drive and no adapters are available on the aftermarket. I made up a couple of the adapters, one went to Tyler and the other went to a guy in Europe. Here is a picture of the adapter prior to threading. Actually, I rejected the one in the picture because I felt the slot was too wide, but anyhow, it will give you an idea of what the part is and what it looks like.



Geo.

WTF! is wrong with these people, so the 'usable' cams arrive from fleabay seller. Staining i can live with, pitting on the lobe is just totally FUBAR.

'call if not completly satisfied, don't post negative feedback', Damn right you'll pay return shipping if you want this piece of crap back.

J*sus f*ckin' H Chr*st these tw*ts give me the dry rots.

rant over.